Improvement in roller-skating surfaces



G. M. ROLLINS. Roller-Skating Surfaces.

No.198,045. Patenrednec. 11,1871

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MW/C/M( Y www UNITED STATES PATENT OEEICE.

GEORGE M. BOLLINS, OF BROOKLYN, NEW YORK, ASSIGNOB TO HELEN M.

`ROLLINS, OF SAME PLAGE.

IMPROVEMENT'IN ROLLER-SKATING SURFACES.I

Specification forming part of Letters Patent No. 198,045, dated December11, 1877 application filed March 24, 1877.

To all whom it may concerne Beit known that I, GEORGE M. RoLLINs, ofBrooklyn, in the county of Kings and State of New York, have invented anew and Improved ItollenSkating Surface, of which the following is aspecification:

Figure l is a plan view, having portions broken away to show theconstruction more clearly. Fig. 2 is a transverse section.

Similar letters of reference indicate correspending parts.

The object of my invention is to provide a smooth, hard, and durablesurface adapted to the purpose of roller-skating 5 and it consists of afloor composed of rock-asphalt, bitumen, and resinous oil, which aremixed together and applied to a suitable foundation in the mannerhereinafter more fully described.

In carrying out my invention I take a quantity of rock asphalt, thevariety known as Swiss rock-asphalt being preferred, in the proportionof about eighty-nine per cent. of ,the whole composition, and add to itten per cent. of bitumen, and a small quantity of linseed or otherdrying or resinous oil, in the proportion of about one per cent. I heatthe ingredients until they are semi-fluid, and while in this state Istir the mass thoroughly until it is evenly mixed.

I then take the composition thus formed, while it is still in a warm andplastic state, and spread it upon a foundation of bricks, stone, orplank, and, by means of iioats, I manipulate the surface until itbecomes entirely cold, taking care to have the surface perfectly level.

In floating the surface I employ several gangs of men, who follow oneafter the other in succession, and continually smooth the surface withthe iioats, until the composition is entirely cold and hard.

The surface thus made and nished is unique, being as smooth as ice, andso hard as to be uninjured by continual use. It possesses qualitiespeculiarly fitted to the purpose for which it is intended.

Referring to the accompanying drawing, A is 'a foundation, which, in thepresent case, consists of brick, but which may be made of any suitablematerial. B is the skating-sun face, formed of the` composition abovedescribed.

In my composition for roller-skate surfaces, I preferably use thePeruvian bitumen or Trinidad pitch, either of which is admirably adaptedto the purpose.

It will thus vbe perceived that I use about eighty-nine per cent. ofrock-asphalt or hard bitumen, about ten per cent. of soft bitumen, andabout one per cent. of oil, by which to produce a floor of remarkablehardness, and with a smooth, polished surface.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- Aroller-skating surface, consistiug'of a compositionof asphalt, bitumen, and resinous oil, laid while warm, and finished bymanipulating it continuously until it becomes cold, as

herein set forth.

GEORGE M. ROLLINS. Witnesses:

C. SEnGwIoK, ALEX. l?. ROBERTS.

